When potassium iodide dissolves in water, the beaker becomes warm. Which statement best describes this process? A) The ΔHsolvation is exothermic and the overall ΔHsolution is exothermic. B) The ΔHsolvation is exothermic but the overall ΔHsolution is endothermic. C) The ΔHsolvation is endothermic but the overall ΔHsolution is exothermic. D) The ΔHsolvation is endothermic and the overall ΔHsolution is endothermic.

Used the balanced equation 2h2+ o2 - -> 2h2o. if you have 7.2 grams of o2 , how many grams of h2o can you produce ?

Ageochemist examines a piece of metal that he found in the soil. he performs tests to identify the metal from its density, electrical conductivity, and melting point. which statement best describes his investigation? a. he is determining physical properties that are sufficient to identify the metal.b. he is determining chemical properties that are sufficient to identify the metal.c. he is determining physical properties that are insufficient to identify the metal.d. he is determining chemical properties that are insufficient to identify the metal.

What does a complete balanced chemical equation include? a. exothermic coefficients b. endothermic coefficients c. valence electrons d. molar coefficients